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2006年4月5日,广东江门市某猪场42天龄保育仔猪突然发病,到6日上午发病率达15％,并死亡10头。经用药3天（阿莫西林0．7g／kg＋新霉素0．6g／kg饮水）无效后,4月8日,场内兽医选取病猪的内脏病变组织制成自家苗,按3mL／头对整个保育群进行免疫,但接种1周后整体猪群仍有零星发病。4月16日晚,另一栋40天龄保育仔猪发病,17日中午死亡12头,发病率达10％,病死率高达5096。经临床观察、病理解剖并结合实验室病原分离鉴定,确诊为溶血性大肠杆菌引起的仔猪水肿病。现报告如下。 相似文献
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广东汕头市龙湖区养殖户刘某于2002年8月投资建设一小型养猪场,至2004年4月中旬全场存栏生猪达386头,其中50kg以上中大猪205头,断奶仔猪181头。仔猪于4月14日从福建省某县购进,4月20日,畜主发现有几头仔猪出现厌食、精神倦怠、拉稀现象,至23日死亡1头,随后每天死亡2～3头不等,而中大猪尚末见异常症状,至27日来我站求诊。根据该场的免疫及饲养管理情况、临床特征,结合实验室诊断结果,确诊为猪沙门氏菌病。经采取对症治疗措施后,收到较好疗效。 相似文献
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2011年4月,云南河口县某规模养殖场饲养的生猪突然暴发以高热、呼吸困难、神经症状、呕吐、母猪流产、产死胎、木乃伊胎等为主要特征的疫病。经流行病学调查、临床症状与剖检病变分析及实验室检验确诊为猪瘟和伪狂犬病混合感染。1流行病学调查该猪场存栏生猪1 420头,其中能繁母猪36头,仔猪280头,架子猪174头。2011年4月18—22日共发病312头。其中母猪流产28头,流产率达77.78%, 相似文献
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<正>1发病情况2007年11月13日,河北省平山县某养猪场从外地购进仔猪33头,母猪11头,育肥猪24头。11月17日,该场仔猪陆续出现精神不振、食欲减退、发热、喘气、腹泻等症状,后期衰竭死亡。引进母猪精神萎靡、发热,体温达41℃～42℃、流产、死胎。育肥猪发热,体温达40℃～42℃,食欲减退或不食,后期黄疸。严重者,后期衰竭而死亡,经病理剖检、实验室诊断,确诊为猪圆环病毒病与猪附红细胞体病混合感染。本次发病呈大面积发生,发病时间较短,引进仔猪发病率达90%以上,仔猪死亡率达85%以上。猪场猪只发病率在20%～30%,发病猪死亡率达80%。给该场造成了很大的经济损失。 相似文献
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2010年辉南县一养猪户刘某养仔猪126头,于4月初发生了以腹泻为主的传染病,通过临床症状观察,病理解剖变化,微生物学检查,确诊为仔猪副伤寒。现将诊断与治疗经过介绍如下。1流行情况和临床症状该养猪户共养猪175头,其中40～60日龄仔猪126头,母猪21头,育肥猪28头,4月3日有11头仔猪发病,经用青霉素、黄链素、安痛定治疗无效, 相似文献
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固原县某养猪场 2 0 0 2年 4月 1日购进 2 0～ 30日龄仔猪 96头 ,与该场 32头 3月龄育肥猪单围饲养。 4月 1 8日 ,该批仔猪相继发病 ,4月 2 3日 ,死亡 1 8头 ,采用大剂量抗生素和抗病毒药物治疗 ,未见好转。4月 2 7日 ,死亡 37头 ,剖检采取病料经实验室诊断为猪瘟与仔猪副伤寒混合感染 ,采取了一系列防制措施 ,1 0ｄ后疫情得到控制 ;先后共死亡 89头 ,死亡率达92 7% ,育肥猪群未能发病。现报告如下 :1 临床症状病猪精神不振 ,食欲减退 ,初期间歇性咳嗽 ,不愿走动 ,体温一般为 4 0～ 4 1℃ ,拉淡黄色稀便 ;后期耳、关节、胸前、腹下均出现… 相似文献
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1发病情况2011年4月4日．河南省偃师市王七村一养猪场从省内购回2月龄仔猪100头．仔猪到场后的第3天开始零星发病．4月8日发病猪只数量达40头．至4月19日死亡仔猪5头。据了解仔猪购回前用药及免疫程序为：出生3天注射1ml“富铁力”．7～15日龄注射仔猪副伤寒，30日龄注射猪瘟疫苗．37日龄注射链球菌活疫苗 相似文献
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上海地区出现猪繁殖与呼吸综合征和2型猪圆环病毒混合感染 总被引：21，自引：2，他引：19
上海地区6个规模化猪场断奶后仔猪出现全身消耗性综合征，剖检的18头病仔猪都表现肺脏严重病变和淋巴结肿大出血。分别设计针对猪繁殖与呼吸综合征病毒(porcine reproductive and respiratory syndrome virus，PRRSV)N蛋白和2型猪圆环病毒(porcine circovirus type2，PCV-2)部分基因的特异性PCR引物，通过RT—PCR和PCR技术从患病猪肺脏组织均扩增出PRRSV和PCV-2的特异基因片段。结合临床症状和流行病学调查，证实上海地区出现PRRSV和PCV-2的混合感染。 相似文献
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Love RJ Philbey AW Kirkland PD Ross AD Davis RJ Morrissey C Daniels PW 《Australian veterinary journal》2001,79(3):192-198
OBJECTIVE: To describe a new syndrome characterised by embryonic mortalities, stillbirths, mummified foetuses and congenital malformations in a herd of intensively farmed pigs. DESIGN: Field observations, laboratory investigations and examination of breeding records. PROCEDURE: Pathology examinations were performed on mummified and congenitally deformed piglets during an outbreak of reproductive disease at a 2600 sow intensive piggery in New South Wales from April to October 1997. Reproductive performance was monitored during the outbreak and breeding records were examined retrospectively. Serum and tissue samples from pigs were tested for evidence of infection with known porcine pathogens and for a new virus, Menangle virus, isolated from stillborn piglets with deformities from the affected piggery in August 1997. RESULTS: Reproductive disease occurred sequentially in all four breeding units at the affected piggery over a period of 21 weeks. The farrowing percentages in each unit decreased from 80 to 82% before the outbreak to 63 to 78% during the outbreak and the number of live piglets per litter declined from a mean of 9.6 to 9.8 before the outbreak to 7.2 to 8.9 during the outbreak. The proportion of affected litters (litters with less than six liveborn piglets) was highest (64%) in the sixth week of the outbreak. Mummified foetuses, stillborn piglets with arthrogryposis, craniofacial deformities and degeneration of the brain and spinal cord, were observed along with occasional abortions. Sera from sows that produced affected litters contained neutralising antibodies against Menangle virus and there was evidence that this virus had been introduced to the piggery in February 1997. CONCLUSIONS: Reproductive disease in pigs due to Menangle virus was characterised by stillbirths, mummification, embryonic death and infertility, along with abortions, skeletal deformities and degeneration of the brain and spinal cord in affected foetuses and stillborn piglets. 相似文献
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仔猪肺型大肠杆菌病的诊断 总被引：4，自引：1，他引：3
通过对60余例患病仔猪症状的观察和3例仔猪的解剖及试验化验分析，发现大通种猪场的仔猪的死亡是由肺型大肠杆菌感染所致，药敏试验结果表明该型大肠杆菌对丁胺卡那、头孢唑啉及头孢胺苄敏感，这三类药物可用于该病的治疗。 相似文献
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Zoric M Sjölund M Persson M Nilsson E Lundeheim N Wallgren P 《Journal of veterinary medicine. B, Infectious diseases and veterinary public health》2004,51(6):278-284
A group of 175 newborn piglets were monitored with respect to development of abrasions and lameness. Lameness was diagnosed in 10.9% of the piglets. About every second litter was affected and around 75% of these diagnoses took place during the first 3 weeks of life. Skin lesions were present already on day 3. They increased in magnitude until day 10 and thereafter declined. They were generally bilateral and most commonly observed as abrasions over the carpal joints. Hocks, face and tails were affected in a similar way, but at lower magnitudes. Sole bruising was observed in 87% of the piglets on the third day of life, and moderate to severe lesions dominated until day 10. Thereafter the incidence decreased, indicating healing with time. Still 39% of the piglets were affected at day 17. There was a significant positive correlation between skin lesions of carpus and hock within all examination days in selected piglets with known identity (n = 48). Between day 10 and 17 significant positive correlations were found within all examination sites with exception of abdomen and teats. The offspring of sows treated against mastitis expressed more abrasions then piglets delivered by healthy sows and the mortality during the first 17 days postpartum was significantly higher among piglets delivered by sows treated for mastitis. The level of serum antibodies to Streptococcus equisimilis in eight dams decreased during the last month of gestation and a declining maternal immunity to S. equisimilis was demonstrated in all piglets (n = 47) during the first 5 weeks of life. During the first 2 weeks of life somewhat lower median levels of serum antibodies were recorded among the piglets that were treated against arthritis (n = 8). 相似文献
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本实验室2012年从江苏省太仓市某发病猪场分离到1株变异的伪狂犬病毒,命名为JS-2012。为了研究该分离株对仔猪的致病性,将12头15日龄的伪狂犬病毒阴性仔猪随机分为3组,其中2组（每组5头猪）分别通过肌肉注射和滴鼻接种JS-2012毒,第3组2头猪做空白对照。接种病毒的仔猪在攻毒后24 h体温均开始升高,4 d后开始死亡,死亡率为100%。临床观察发现,滴鼻组仔猪发病死亡明显快于肌肉注射组。对病死猪进行剖解,均可见大脑血管扩张并出血等典型的伪狂犬病病理变化。病理切片显示猪的脑蛛网膜下腔严重出血,其他各脏器也均有严重病理变化。结果表明该变异株JS-2012为伪狂犬强毒毒株。 相似文献
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Prevalence of congenital abnormalities in pigs 总被引：1，自引：0，他引：1
The prevalence of congenital defects in piglets in a large intensive piggery was determined by autopsy examination of piglets dying in the first week of life and from records kept by the farm staff. A total of 1908 piglets was examined at autopsy and 14,535 were born over the period of the survey. The prevalence of defects on this farm was estimated to be 2.9% of all piglets born, and at least one piglet with a congenital defect was found in 17.4% of litters. Of the piglets dying in the first week 9.5% had a defect and of these 8% had multiple anomalies. The mean litter size at birth for litters with a malformed piglet was 10.9 compared with 9.9 for litters without a malformed piglet. The total preweaning loss in litters containing a malformed pig was higher (29.8%) than that in litters without malformations (17.4%). The antepartum and parturient deaths in litters with a malformed piglet were 35% higher than normal litters. Parturient and anteparturient deaths amounted to 7.5% of piglets born and the total preweaning mortality was 19.9%. Sixty-six per cent of these mortalities occurred within the first week of life. The litter size at birth increased with parity as did the prevalence of litters containing malformed piglets. Neonatal loss was about 2 pigs per litter for all parities. Litter size at birth in litters containing a malformed pig was consistently higher by one pig per litter from all parities, but parturient (7.1%) and anteparturient (1.4%) deaths were also higher in these litters than in litters without malformations (5.1% and 1.2% respectively).(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
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In a large herd of pigs whose piglets suffered from diarrheas coprological examination revealed the great incidence of Isospora suis coccidia in piglets. The first oocysts were found out in seven-day piglets; the highest incidence was observed in twelve-day piglets (65.9%); the time of oocyst elimination (patency) was five to six days. The oocysts appeared in the excrements of piglets two to three days after the diarrhea onset. Individual examinations of piglets demonstrated the correlation between the intensity of clinical signs and the numbers of eliminated oocysts. No oocysts of I. suis were found either in sow excrements or gilt excrements. The I. suis oocysts were diagnosed in the excrements of piglets from first-farrowing sows and in the excrements of piglets from the sows, in the litters of which I. suis had already been demonstrated. Evaluating the therapeutic and preventive effects of the anticoccidic drug amprolium no significant difference was recorded in the I. suis incidence between the medicated group and the control group. 相似文献
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Porcine parvovirus- and porcine circovirus 2-associated reproductive failure and neonatal mortality in crossbred Indian pigs 总被引：1，自引：0，他引：1
The objective of this study was to detect the presence of porcine parvovirus (PPV) and porcine circovirus 2 (PCV2) in a farm
showing reproductive failure and increased mortality in neonatal piglets by histopathological examination, polymerase chain
reaction, and demonstration of viral antigen and nucleic acid. Out of 594 piglets farrowed by 70 first-parity gilts, nine
(1.51%) mummified fetuses, 13 (2.19%) stillborn, and 572 (96.3%) live-born piglets were recorded. The average litter size
at birth was 8.48 piglets per litter. One hundred ninety-four (33.91%) piglets died within 7 days of age. PPV was detected
in five litters (7.14%) and two of them revealed coinfection with PCV2. The pathological lesions in the coinfected litters
were more severe, indicating a synergistic action between the two viruses. Results of this study suggest for the first time
occurrence of PPV and coinfection with PCV2 in crossbred Indian pigs affected with reproductive problem and neonatal mortality. 相似文献
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F Lingaas 《Acta veterinaria Scandinavica》1991,32(1):107-114
Individual health records collected from 1984 to 1986 in 70 swine-herds in the south-eastern part of Norway were analysed by epidemiological methods. The incidence rate for most of the reported diseases was less than 1% per farrowing, and a majority of disease recordings concerned 6 frequently-occurring conditions. The incidence of several diseases was lower in crossbred sows compared to purebred Norwegian landrace sows. The risk of most diseases increased in sows that had been ill previously, and also in litters from sows that had previously had diseased litters. Disease risk in piglets also increased if the sow became ill during the first few days after farrowing. The reduced performance associated with most of the common diseases impacts adversely on economic returns. 相似文献